Synthesis of Highly Conjugated Functionalized 2-Pyridones by Palladium-Catalyzed Aerobic Oxidative Dicarbonation Reactions of <i>N</i>-(Furan-2-ylmethyl) Alkyne Amides and Alkenes as Coupling Partners
作者:Yongjie Yang、Kai Jiang、Hua Zhu、Biaolin Yin
DOI:10.1021/acs.joc.0c02730
日期:2021.2.5
A mild, step-economical method for the synthesis of highly conjugated functionalized 2-pyridones from N-(furan-2-ylmethyl) alkyne amides is reported. This method involves Pd-catalyzed aerobic oxidative dicarbonation reactions of alkynes with carbon nucleophiles of a furan ring and an acrylate or styrene as coupling partners. The UV–vis absorption spectra of some of the 2-pyridones indicated that they
We report an efficient and mild approach for radical dearomatization via photoinduced palladium-catalyzed reaction of three components (i.e., furans, alcohols, and bromoalkanes). In this strategy, various functionalized spiro-heterocycles were prepared from furans in one step via cascade C–C/C–O bondformation under redox neutral conditions.